<template>
  <div>
    <!-- Header 区域 -->
    <van-nav-bar fixed title="文章详情" left-arrow @click-left="$router.back()" />

    <!-- 文章加载中 -->
    <van-loading color="#1989fa" v-if="Object.keys(artObj).length === 0">好内容正在路上了...</van-loading>

    <div v-else>
        <!-- 文章信息区域 -->
    <div class="article-container">
      <!-- 文章标题 -->
      <h1 class="art-title">{{artObj.title}}</h1>

      <!-- 用户信息 -->
      <van-cell center :title="artObj.aut_name" :label="theTime(artObj.pubdate)">
        <template #icon>
          <img :src="artObj.aut_photo" alt class="avatar" />
        </template>
        <template #default>
          <div>
            <van-button type="info" size="mini" v-if="artObj.is_followed" @click="followFn(true)">已关注</van-button>
            <van-button icon="plus" type="info" size="mini" plain v-else @click="followFn(false)">关注</van-button>
          </div>
        </template>
      </van-cell>

      <!-- 分割线 -->
      <van-divider></van-divider>

      <!-- 文章内容 -->
      <div class="art-content" v-html="artObj.content"></div>

      <!-- 分割线 -->
      <van-divider>End</van-divider>

      <!-- 点赞 -->
      <!--  attitude 用户对文章的态度, -1: 无态度，0-不喜欢，1-点赞 -->
      <div class="like-box">
        <van-button icon="good-job" type="danger" size="small" v-if="artObj.attitude === 1" @click="likeFn(true)">已点赞</van-button>
        <van-button icon="good-job-o" type="danger" plain size="small" v-else @click="likeFn(false)">点赞</van-button>
      </div>
    </div>

    <!-- 文章评论部分 -->
    <div>
      <CommentList></CommentList>
    </div>
    </div>

  </div>
</template>

<script>
import { detailAPI, userFollowedAPI, userUnFollowedAPI, unlikeAPI, likeAPI } from '@/api'
import { timeAgo } from '@/utils/date'
import CommentList from './CommentList.vue'
export default {
  data () {
    return {
      artObj: {} // 文章对象
    }
  },
  async created () {
    const res = await detailAPI({
      artId: this.$route.query.art_id
    })
    console.log(res)
    this.artObj = res.data.data
  },
  methods: {
    theTime: timeAgo,
    // 关注/取关 -> 作者
    async followFn (bool) {
      if (bool === true) {
        // 按钮要变成取关
        this.artObj.is_followed = false
        // 发接口
        const res = await userUnFollowedAPI({
          userId: this.artObj.aut_id
        })
        console.log(res)
      } else {
        // 按钮要变成关注
        this.artObj.is_followed = true
        // 发接口
        const res = await userFollowedAPI({
          userId: this.artObj.aut_id
        })
        console.log(res)
      }
    },
    // 点赞/取消点赞 -> 文章
    async likeFn (bool) {
      if (bool === true) {
        // 按钮界面变为取消点赞
        this.artObj.attitude = 0
        const res = await unlikeAPI({
          artId: this.artObj.art_id
        })
        console.log(res)
      } else {
        // 按钮界面变为点赞
        this.artObj.attitude = 1
        const res = await likeAPI({
          artId: this.artObj.art_id
        })
        console.log(res)
      }
    }
  },
  components: { CommentList }
}
</script>

  <style scoped lang="less">
.article-container {
  padding: 10px;
  margin-top: 46px;
}
.art-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0;
}

.art-content {
  font-size: 12px;
  line-height: 24px;
  width: 100%;
  overflow-x: scroll;
  word-break: break-all;
  /deep/ img {
    width: 100%;
  }
  /deep/ pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.van-cell {
  padding: 5px 0;
  &::after {
    display: none;
  }
}

.avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #f8f8f8;
  margin-right: 5px;
  border: none;
}

.like-box {
  display: flex;
  justify-content: center;
}
.van-loading{
  text-align: center;
  padding-top: 46px;
}
</style>
